Showerhead



FIG. 1 is a bottom perspective view of a preferred embodiment of a showerhead showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a left side view;

FIG. 5 is a right side view;

FIG. 6 is a front view; and,

FIG. 7 is a back view. 

The ornamental design for a showerhead, as shown and described. 